﻿using System;

/* Copyright (c) 2010 CBaxter
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 
 * IN THE SOFTWARE. 
 */

namespace Xpedite.Resources.Minifiers
{
  internal class CssMinifier : IMinifier
  {
    private readonly IMinifier _minifier;
    
    public CssMinifier(Type minifierType)
    {
      if (!typeof(IMinifier).IsAssignableFrom(minifierType))
        throw new XpediteException(String.Format("The specified CSS minifier '{0}' does not implement the '{1}' interface.", minifierType.FullName, typeof(IMinifier).FullName));

      _minifier = (IMinifier)Activator.CreateInstance(minifierType);
    }

    public String Minify(String content)
    {
      try
      {
        return _minifier.Minify(content);
      }
      catch (Exception ex)
      {
        return String.Format("/* CSS MINIFICATION EXCEPTION: {0} */{1}{2}", ex.Message, Environment.NewLine, content);
      }
    }
  }
}
